topic Unusual question of the electricity on imx258 in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/Unusual-question-of-the-electricity-on-imx258/m-p/156718#M2421 <HTML><HEAD></HEAD><BODY><P>The first picture, Vout is the voltage of CPU pin 3.3V, Iout is the current of CPU pin 3.3V. <BR />Before power-on, 3.3V remained on circuit board about 200mV, after power-on, the oscillograph captured current 2.7A consumed. Power system detects abnormal current to enter the protected status while closing output.</P><P>Question:</P><P>1.&nbsp;why the residual voltage can cause CPU's NVCC_XXX (digital terminal) current consumption so much<BR />2.What is the residual voltage, the system will not consume high current?<BR />3.What better way to avoid this anomaly?</P></BODY></HTML> Fri, 03 Jun 2011 07:37:11 GMT abelguan 2011-06-03T07:37:11Z Unusual question of the electricity on imx258 https://community.nxp.com/t5/i-MX-Processors/Unusual-question-of-the-electricity-on-imx258/m-p/156718#M2421 <HTML><HEAD></HEAD><BODY><P>The first picture, Vout is the voltage of CPU pin 3.3V, Iout is the current of CPU pin 3.3V. <BR />Before power-on, 3.3V remained on circuit board about 200mV, after power-on, the oscillograph captured current 2.7A consumed. Power system detects abnormal current to enter the protected status while closing output.</P><P>Question:</P><P>1.&nbsp;why the residual voltage can cause CPU's NVCC_XXX (digital terminal) current consumption so much<BR />2.What is the residual voltage, the system will not consume high current?<BR />3.What better way to avoid this anomaly?</P></BODY></HTML> Fri, 03 Jun 2011 07:37:11 GMT https://community.nxp.com/t5/i-MX-Processors/Unusual-question-of-the-electricity-on-imx258/m-p/156718#M2421 abelguan 2011-06-03T07:37:11Z